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我正在JBOSS 7.1.1服務器中測試EJB Client。 EJB的服務端代碼也位於同一個虛擬機上。它會在運行時拋出「java.lang.ClassNotFoundException：com.zreflect.emyed.ejb.interfaces.IWhiteBoardServiceRemote」錯誤。一切似乎都是正確的，但我無法弄清楚問題所在。請讓我知道我在做錯什麼。EJB遠程查找失敗，並返回javax.naming.NameNotFoundException
服務器端代碼
@Stateless(name = "WhiteBoardService")
@Local(IWhiteBoardService.class)
@Remote(IWhiteBoardServiceRemote.class)
public class WhiteBoardService implements IWhiteBoardService {
private WhiteBoardPersistenceImpl whiteBoardPersistenceImpl = WhiteBoardPersistenceImpl
.getInstance();
private CoursePersistenceImpl coursePersistenceImpl = CoursePersistenceImpl
.getInstance();
@Override
public LongKeyValue[] getWhiteBoardContent(long courseSessionGuid, UserSession userSession) {
// returns the attachment Guid and the Attachment Title
return whiteBoardPersistenceImpl.getAttachmentForWhiteBoard(courseSessionGuid, userSession) ;
}......
本地接口
@Local
public interface IWhiteBoardService {
public WhiteBoardSessionVO openWhiteBoard(long courseSessionGuid, UserSession userSession);
public WhiteBoardSessionVO joinWhiteBoard(long courseSessionGuid,UserSession userSession);
public LongKeyValue[] getWhiteBoardContent(long courseSessionGuid, UserSession userSession);
}
遠程接口
public interface IWhiteBoardServiceRemote extends IWhiteBoardService{
}
EJB已經部署
20:42:32,278 INFO [org.jboss.as.ejb3.deployment.processors.EjbJndiBindingsDeploymentUnitProcessor] (MSC service thread 1-3) JNDI bindings for session bean named WhiteBoardService in deployment unit subdeployment "emyed-ejb-1.0.jar" of deployment "emyed-ear.ear" are as follows:
java:global/emyed-ear/emyed-ejb-1.0/WhiteBoardService!com.zreflect.emyed.ejb.interfaces.IWhiteBoardServiceRemote
java:app/emyed-ejb-1.0/WhiteBoardService!com.zreflect.emyed.ejb.interfaces.IWhiteBoardServiceRemote
java:module/WhiteBoardService!com.zreflect.emyed.ejb.interfaces.IWhiteBoardServiceRemote
java:jboss/exported/emyed-ear/emyed-ejb-1.0/WhiteBoardService!com.zreflect.emyed.ejb.interfaces.IWhiteBoardServiceRemote
java:global/emyed-ear/emyed-ejb-1.0/WhiteBoardService!com.zreflect.emyed.ejb.interfaces.IWhiteBoardService
java:app/emyed-ejb-1.0/WhiteBoardService!com.zreflect.emyed.ejb.interfaces.IWhiteBoardService
java:module/WhiteBoardService!com.zreflect.emyed.ejb.interfaces.IWhiteBoardService
客戶端類
public class WhiteboardService {
public static void main(String[] args){
Context context=null;
try
{
Properties props = new Properties();
props.put(Context.INITIAL_CONTEXT_FACTORY, "org.jboss.naming.remote.client.InitialContextFactory");
props.put(Context.PROVIDER_URL, "remote://localhost:4447");
props.put(Context.SECURITY_PRINCIPAL, "ejbremote");
props.put(Context.SECURITY_CREDENTIALS, "remote4u");
context = new InitialContext(props);
System.out.println("\n\tGot initial Context: "+context);
}
catch (Exception e)
{
e.printStackTrace();
}
// Lookup Format will be
// <app-name>/<module-name>/<distinct-name>/<bean-name>!<fully-qualified-classname-of-the-remote-interface>
IWhiteBoardServiceRemote whiteboardService = null;
try {
Object obj = context.lookup("java:jboss/exported/emyed-ear/emyed-ejb-1.0/WhiteBoardService!com.zreflect.emyed.ejb.interfaces.IWhiteBoardServiceRemote");
} catch (NamingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("\n\t (\"MiddlewareMagic\") = "+ whiteboardService.getWhiteBoardContent(1, null));
}
控制檯登錄
02:13:45,303 INFO xnio:63 - XNIO Version 3.0.3.GA
02:13:45,355 INFO nio:55 - XNIO NIO Implementation Version 3.0.3.GA
02:13:45,469 INFO remoting:70 - JBoss Remoting version 3.2.3.GA
Got initial Context: [email protected]
javax.naming.NameNotFoundException: jboss/exported/emyed-ear/emyed-ejb-1.0/WhiteBoardService!com.zreflect.emyed.ejb.interfaces.IWhiteBoardServiceRemote -- service jboss.naming.context.java.jboss.exported.jboss.exported.emyed-ear."emyed-ejb-1.0"."WhiteBoardService!com.zreflect.emyed.ejb.interfaces.IWhiteBoardServiceRemote"
at org.jboss.as.naming.ServiceBasedNamingStore.lookup(ServiceBasedNamingStore.java:97)
at org.jboss.as.naming.NamingContext.lookup(NamingContext.java:178)
at org.jboss.naming.remote.protocol.v1.Protocol$1.handleServerMessage(Protocol.java:127)
at org.jboss.naming.remote.protocol.v1.RemoteNamingServerV1$MessageReciever$1.run(RemoteNamingServerV1.java:73)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Exception in thread "main" java.lang.NoClassDefFoundError: com/zreflect/emyed/ejb/interfaces/IWhiteBoardServiceRemote
at com.zreflect.emyed.whiteboard.service.WhiteboardService.main(WhiteboardService.java:47)
Caused by: java.lang.ClassNotFoundException: com.zreflect.emyed.ejb.interfaces.IWhiteBoardServiceRemote
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
... 1 more
同意，如果發出「ClassNotFoundException：{接口}」，則類加載時出現問題 - ejb-client jar需要在客戶端依賴項中。如果您使用的是maven：https：//maven.apache.org/plugins /maven-ejb-plugin/examples/ejb-client-dependency.html – Honza 2017-10-01 10:52:32